#include<bits/stdc++.h> 
using namespace std;

int a[10000005],b[10000005];
int n,s,q,m;

int main(){
	scanf("%d",&n);
	scanf("%d",&m);
	for(int i=1;i<=n;i++){
		scanf("%d",&a[i]);
	}
	
    for(int i=0;i<m;i++){
    	scanf("%d",&b[i]);
    } 
	for(int i=0;i<m;i++){
		int l=1,r=n,d=0;
		while(l<=r){
			int mid =l + (r-l)/2;
			if(a[mid]==b[i]){
			    printf("%d\n",mid);
		        d++;
				break;	
			}else if(a[mid]<b[i]){
				l=mid+1;
			}else if(a[mid]>b[i]){
				r=mid-1;
			}
	    }
	    if(d!=1){
	        printf("%s\n","-1");
		}
	}
}